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Subtract Fractions with Different Denominators Worksheet

Fractions lesson 16: Subtracting fractions: different denominators · Set 703 · 40 questions
TalentJR

The method (LCM, then take away): Find the LCM of the two bottom numbers. Change each fraction to that bottom number. Subtract the tops, keep the bottom, and simplify.

NameDateTime takenScore ___ / 40
  1. 1.4/5 − 3/10 =
  2. 2.A bottle has 1/3 litre of juice. Diya drinks 1/9 litre. How much juice is left (in litres)? =
  3. 3.A tank is 1/2 full of water. Then water filling 4/9 of the tank is used. What fraction of the tank is full now? =
  4. 4.Vihaan has a ribbon 6/7 m long and cuts off 3/4 m. How long is the ribbon now (in m)? =
  5. 5.3/5 − 1/3 =
  6. 6.A tank is 1/5 full of water. Then water filling 1/10 of the tank is used. What fraction of the tank is full now? =
  7. 7.8/9 − 1/2 =
  8. 8.A bottle has 5/9 litre of juice. Ishaan drinks 1/2 litre. How much juice is left (in litres)? =
  9. 9.3/5 − 1/6 =
  10. 10.A bottle has 9/10 litre of juice. Aarav drinks 2/5 litre. How much juice is left (in litres)? =
  11. 11.2/3 − 5/9 =
  12. 12.Riya has a ribbon 5/7 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  13. 13.8/9 − 1/3 =
  14. 14.A tank is 3/5 full of water. Then water filling 1/2 of the tank is used. What fraction of the tank is full now? =
  15. 15.A tank is 5/7 full of water. Then water filling 1/3 of the tank is used. What fraction of the tank is full now? =
  16. 16.A tank is 3/7 full of water. Then water filling 1/4 of the tank is used. What fraction of the tank is full now? =
  17. 17.Kabir has a ribbon 7/9 m long and cuts off 1/2 m. How long is the ribbon now (in m)? =
  18. 18.Sara has a ribbon 1/2 m long and cuts off 1/5 m. How long is the ribbon now (in m)? =
  19. 19.1/3 − 2/9 =
  20. 20.4/5 − 1/4 =
  21. 21.A tank is 2/9 full of water. Then water filling 1/6 of the tank is used. What fraction of the tank is full now? =
  22. 22.9/10 − 3/4 =
  23. 23.A tank is 3/4 full of water. Then water filling 3/8 of the tank is used. What fraction of the tank is full now? =
  24. 24.5/9 − 1/2 =
  25. 25.3/4 − 5/7 =
  26. 26.A tank is 1/2 full of water. Then water filling 3/7 of the tank is used. What fraction of the tank is full now? =
  27. 27.1/3 − 1/5 =
  28. 28.2/5 − 1/4 =
  29. 29.7/10 − 2/3 =
  30. 30.1/4 − 1/5 =
  31. 31.A bottle has 3/4 litre of juice. Riya drinks 1/7 litre. How much juice is left (in litres)? =
  32. 32.A tank is 1/2 full of water. Then water filling 2/9 of the tank is used. What fraction of the tank is full now? =
  33. 33.A tank is 2/3 full of water. Then water filling 5/9 of the tank is used. What fraction of the tank is full now? =
  34. 34.7/8 − 1/4 =
  35. 35.Diya has a ribbon 3/4 m long and cuts off 3/10 m. How long is the ribbon now (in m)? =
  36. 36.2/3 − 1/7 =
  37. 37.7/10 − 1/3 =
  38. 38.A tank is 2/3 full of water. Then water filling 1/5 of the tank is used. What fraction of the tank is full now? =
  39. 39.8/9 − 1/6 =
  40. 40.2/5 − 3/10 =

Answer key

  1. 1/2
  2. 2/9
  3. 1/18
  4. 3/28
  5. 4/15
  6. 1/10
  7. 7/18
  8. 1/18
  9. 13/30
  10. 1/2
  11. 1/9
  12. 3/14
  13. 5/9
  14. 1/10
  15. 8/21
  16. 5/28
  17. 5/18
  18. 3/10
  19. 1/9
  20. 11/20
  21. 1/18
  22. 3/20
  23. 3/8
  24. 1/18
  25. 1/28
  26. 1/14
  27. 2/15
  28. 3/20
  29. 1/30
  30. 1/20
  31. 17/28
  32. 5/18
  33. 1/9
  34. 5/8
  35. 9/20
  36. 11/21
  37. 11/30
  38. 7/15
  39. 13/18
  40. 1/10

Free fractions lessons, practice and worksheets at talentjr.in/fractions-for-kids